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Sensors & Transmitters
   Data Acquisition
   pH and ORP
   Relative Humidity / Dewpoint
     RH Fixed Installation
     RH Portable Instruments
       HM70 RH Meter & Calibrator
       DM70 Dewpoint Meter & Calibrator
       HM40 Handheld RH & T Meter
       HMI41 Handheld RH & T
       HMK15 Humidity Calibrator
     Probes and OEM Modules
   Differential Pressure
   Carbon Dioxide
   Nitrogen Dioxide
   Carbon Monoxide
   Smoke Detectors
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   Proximity Sensors
   Photoelectric Sensors
   Safety Light Curtains
   Cables and Distribution Boxes
   Oxygen Transmitters


Tel: 1-925-706-7433

Vaisala HM70 Hand-Held Humidity and Temperature Meter
Vaisala Instruments

HM70 HUMICAP® Hand-Held Humidity and Temperature Meter


The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 is designed for demanding humidity measurements in spotchecking applications. It is also ideal for field checking and calibration of Vaisala's fixed humidity instruments. The HM70 incorporates the latest generation of the Vaisala HUMICAP® Sensor. It is reliable and has better than ever long-term stability. Additionally, it has a sensor that copes well with chemical interference and provides accuracy that lasts in demanding conditions.
The chemical purge option maintains measurement accuracy in environments with high concentrations of chemicals. The sensor preheat option reduces measurement delays as it keeps the sensor dry when the probe is inserted into hot and humid processes.

  • RH measurement range 0…100 % RH
  • Multilingual user interface
  • Shows measurement trends graphically
  • Proven Vaisala HUMICAP® Sensor technology
  • 3 probes, temperature measurement ranges between -70 and +180 °C
  • Multiprobe operation; dewpoint and CO2 probes can also be connected
  • Displays various humidity parameters
  • Sensor preheat and chemical purge options for demanding conditions
  • Data can be logged, and transferred to a PC via MI70 Link software
  • Rugged and reliable - even in extreme conditions
  • NIST traceable (certificate included)
PDF File Brochure PDF File User Guide
Relative humidity measurement

Measurement range
Accuracy at +20 °C (68 °F)


0 ... 100 % RH
± 1.0 % RH (0 ... 90 % RH)
± 1.7 % RH (90 ... 100 % RH)
Vaisala HUMICAP® 180R

Temperature measurement

Measurement range
          short time
Accuracy at +20 °C (+68 °F)

-20 ... +60 °C (-4 … +140 °F)
-50 ... +120 °C (-58 … +248 °F)
-50 ... +180 °C (-58 … +356 °F)
-70 ... +180 °C (-94 … +356 °F)
± 0.2 °C (0.36 °F)
Pt100 1EC751 1/3 class B

Operating environment

Temperature (MI70 measurement indicator)

-10 ... +40 °C (+14 ... +104 °F)

Inputs and outputs

Power consumption

Analog output
Menu languages

Rechargeable NiMH battery pack with AC power or 4 x AA alkaline batteries, type IEC LR6
0 ... 1 VDC
English, French, Spanish, German, Swedish, Finnish, Russian, Japanese, Chinese


Housing classification

400 g

HM70 RH Meter & Calibrator

HM70 Hand-held Humidity & Temperature Meter HM70 Hand-held Humidity & Temperature Meter
Code: VIHM70
Price: $1,640.00
Quantity in Basket: none

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